From WNYC in New York, this is On the Media. I'm Bob Garfield.

And I'm Brooke Gladstone. On the evening of February 26th in a suburb of Orlando, Florida,

Trevon Martin, a 17-year-old African American, was shot and killed by a neighbor.

Martin was at his stepmothers. He went to buy some skittles during half-time of the NBA All-Star game.

Neighborhood watch leader George Zimmerman called police to report a suspicious black man.

Before police arrived, Zimmerman confronted the teenager and during the scuffle,

Zimmerman shot him in the chest, killing him.

Well, it was it self-defense or murder in cold blood?

The family of 17-year-old Trayvon Martin says it was murder,

and there is new evidence that may help prove their case.

Florida law establishes relatively broad latitude

when it comes to killing in self-defense.

In fact, self-defense does not even have to be proved.

Floridians can stand their ground and shoot if they feel threatened, even in a public place.

George Zimmerman was not charged or even arrested.

This week, a federal investigation was launched.

The police chief in Sanford County where the killing took place stepped down temporarily,

and in New York, protesters called for justice for Trayvon.

We are Trebon Martin.

But for weeks, the story earned very little national attention.

The Huffington Post's Tremaine Lee is one of the few reporters who covered the story early on

after local sources in Florida called him with some compelling details.

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